432 строки
12 KiB
C
432 строки
12 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: hwgpe - Low level GPE enable/disable/clear functions
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2007, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/acevents.h>
|
|
|
|
#define _COMPONENT ACPI_HARDWARE
|
|
ACPI_MODULE_NAME("hwgpe")
|
|
|
|
/* Local prototypes */
|
|
static acpi_status
|
|
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block);
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_write_gpe_enable_reg
|
|
*
|
|
* PARAMETERS: gpe_event_info - Info block for the GPE to be enabled
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must
|
|
* already be cleared or set in the parent register
|
|
* enable_for_run mask.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info)
|
|
{
|
|
struct acpi_gpe_register_info *gpe_register_info;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/* Get the info block for the entire GPE register */
|
|
|
|
gpe_register_info = gpe_event_info->register_info;
|
|
if (!gpe_register_info) {
|
|
return (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Write the entire GPE (runtime) enable register */
|
|
|
|
status = acpi_hw_low_level_write(8, gpe_register_info->enable_for_run,
|
|
&gpe_register_info->enable_address);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_clear_gpe
|
|
*
|
|
* PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear the status bit for a single GPE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
|
|
{
|
|
acpi_status status;
|
|
u8 register_bit;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
register_bit = (u8)
|
|
(1 <<
|
|
(gpe_event_info->gpe_number -
|
|
gpe_event_info->register_info->base_gpe_number));
|
|
|
|
/*
|
|
* Write a one to the appropriate bit in the status register to
|
|
* clear this GPE.
|
|
*/
|
|
status = acpi_hw_low_level_write(8, register_bit,
|
|
&gpe_event_info->register_info->
|
|
status_address);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_get_gpe_status
|
|
*
|
|
* PARAMETERS: gpe_event_info - Info block for the GPE to queried
|
|
* event_status - Where the GPE status is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Return the status of a single GPE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
#ifdef ACPI_FUTURE_USAGE
|
|
acpi_status
|
|
acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
|
|
acpi_event_status * event_status)
|
|
{
|
|
u32 in_byte;
|
|
u8 register_bit;
|
|
struct acpi_gpe_register_info *gpe_register_info;
|
|
acpi_status status;
|
|
acpi_event_status local_event_status = 0;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
if (!event_status) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the info block for the entire GPE register */
|
|
|
|
gpe_register_info = gpe_event_info->register_info;
|
|
|
|
/* Get the register bitmask for this GPE */
|
|
|
|
register_bit = (u8)
|
|
(1 <<
|
|
(gpe_event_info->gpe_number -
|
|
gpe_event_info->register_info->base_gpe_number));
|
|
|
|
/* GPE currently enabled? (enabled for runtime?) */
|
|
|
|
if (register_bit & gpe_register_info->enable_for_run) {
|
|
local_event_status |= ACPI_EVENT_FLAG_ENABLED;
|
|
}
|
|
|
|
/* GPE enabled for wake? */
|
|
|
|
if (register_bit & gpe_register_info->enable_for_wake) {
|
|
local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
|
|
}
|
|
|
|
/* GPE currently active (status bit == 1)? */
|
|
|
|
status =
|
|
acpi_hw_low_level_read(8, &in_byte,
|
|
&gpe_register_info->status_address);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto unlock_and_exit;
|
|
}
|
|
|
|
if (register_bit & in_byte) {
|
|
local_event_status |= ACPI_EVENT_FLAG_SET;
|
|
}
|
|
|
|
/* Set return value */
|
|
|
|
(*event_status) = local_event_status;
|
|
|
|
unlock_and_exit:
|
|
return (status);
|
|
}
|
|
#endif /* ACPI_FUTURE_USAGE */
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_disable_gpe_block
|
|
*
|
|
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
|
* gpe_block - Gpe Block info
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable all GPEs within a single GPE block
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
|
|
struct acpi_gpe_block_info * gpe_block)
|
|
{
|
|
u32 i;
|
|
acpi_status status;
|
|
|
|
/* Examine each GPE Register within the block */
|
|
|
|
for (i = 0; i < gpe_block->register_count; i++) {
|
|
|
|
/* Disable all GPEs in this register */
|
|
|
|
status = acpi_hw_low_level_write(8, 0x00,
|
|
&gpe_block->register_info[i].
|
|
enable_address);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_clear_gpe_block
|
|
*
|
|
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
|
* gpe_block - Gpe Block info
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear status bits for all GPEs within a single GPE block
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
|
|
struct acpi_gpe_block_info * gpe_block)
|
|
{
|
|
u32 i;
|
|
acpi_status status;
|
|
|
|
/* Examine each GPE Register within the block */
|
|
|
|
for (i = 0; i < gpe_block->register_count; i++) {
|
|
|
|
/* Clear status on all GPEs in this register */
|
|
|
|
status = acpi_hw_low_level_write(8, 0xFF,
|
|
&gpe_block->register_info[i].
|
|
status_address);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_enable_runtime_gpe_block
|
|
*
|
|
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
|
* gpe_block - Gpe Block info
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
|
|
* combination wake/run GPEs.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
|
|
struct acpi_gpe_block_info * gpe_block)
|
|
{
|
|
u32 i;
|
|
acpi_status status;
|
|
|
|
/* NOTE: assumes that all GPEs are currently disabled */
|
|
|
|
/* Examine each GPE Register within the block */
|
|
|
|
for (i = 0; i < gpe_block->register_count; i++) {
|
|
if (!gpe_block->register_info[i].enable_for_run) {
|
|
continue;
|
|
}
|
|
|
|
/* Enable all "runtime" GPEs in this register */
|
|
|
|
status =
|
|
acpi_hw_low_level_write(8,
|
|
gpe_block->register_info[i].
|
|
enable_for_run,
|
|
&gpe_block->register_info[i].
|
|
enable_address);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_enable_wakeup_gpe_block
|
|
*
|
|
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
|
* gpe_block - Gpe Block info
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
|
|
* combination wake/run GPEs.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
|
struct acpi_gpe_block_info *gpe_block)
|
|
{
|
|
u32 i;
|
|
acpi_status status;
|
|
|
|
/* Examine each GPE Register within the block */
|
|
|
|
for (i = 0; i < gpe_block->register_count; i++) {
|
|
if (!gpe_block->register_info[i].enable_for_wake) {
|
|
continue;
|
|
}
|
|
|
|
/* Enable all "wake" GPEs in this register */
|
|
|
|
status = acpi_hw_low_level_write(8,
|
|
gpe_block->register_info[i].
|
|
enable_for_wake,
|
|
&gpe_block->register_info[i].
|
|
enable_address);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_disable_all_gpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable and clear all GPEs in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_hw_disable_all_gpes(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
|
|
|
|
status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
|
|
status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_enable_all_runtime_gpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_hw_enable_all_runtime_gpes(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
|
|
|
|
status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_hw_enable_all_wakeup_gpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_hw_enable_all_wakeup_gpes(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
|
|
|
|
status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block);
|
|
return_ACPI_STATUS(status);
|
|
}
|